spiking and loss of power

Dunn · Post by **Dunn** » Wed Jan 10, 2007 10:29 am

This is really strange,if i am at about 3000 before car reaches optimal boost,say it's at 0.1 and rissing if i give it stick the car spikes to about 0.9/ 1bar then returns to 0.6/0.7 bar ,sumtimes it sort of lags as well,by this i mean the gauge shows boost coming though but the car feels as if it's gone then comes back then it's gone and then it comes back.
here is the tricky part,if i ease it into boost and only give it full throttle once the car is at full boost then none of these problems occur.although sumtimes i get the boost dissapearing thing

please help,any ideas or am i just not driving the car correctly as it is my first turbo cab

Vlade · Post by **Vlade** » Wed Jan 10, 2007 10:35 am

I had this cleaned my MAF and it sorted it out

Dunn · Post by **Dunn** » Wed Jan 10, 2007 10:39 am

thanx Vlade i'll try it tonight and check it out

WooHaa · Post by **WooHaa** » Wed Jan 10, 2007 10:40 am

I had this once with my first SX.
The only thing that finally sorted it out was changing the spark plug to a hot plug.

Vlade · Post by **Vlade** » Wed Jan 10, 2007 11:03 am

If that doesn't work, try check for any boost leaks, if there arn't any check your ECU, it might be that there a wire is loose or something...

Things to check
* two wire water temp
* knock sensor

if any of those are disconnected your ECU will switch to the high octane map, and it causes an unpleasant ride